考虑离散负荷恢复的两阶段全流程综合电-气传输系统恢复

Expeditious power system (PS) restoration is always the top priority after blackouts, which necessitates full-process restoration instead of considering different phases separately. More importantly, the discrete load restoration characteristic owing to practical switching operations is neglected in most studies. Besides, mutual interactions between the power and natural gas transmission systems (TS & NTS) during restoration are rarely studied. Therefore, a two-stage full-process integrated power-gas transmission system (IPGTS) restoration model considering discrete load restoration (DLR) is proposed in this paper. First, a two-stage restoration framework for IPGTS is presented, and a first-stage submodel is proposed to implement IPGTS zone partitioning based on connectivity and classification constraints according to the topology and resource abundance. Then, based on the zone partitioning results, the second-stage parallel full-process IPGTS restoration submodel of multiple zones considering DLR is proposed. Finally, case studies on the 125-bus TS and 49-node NTS in a Chinese city are performed to justify the effectiveness in enhancing restoration efficiency and the validity of the proposed model. Simulation results exhibit higher restoration benefits and better performances in power generation and load restorations.